But Mr Gonzales said Canberra might experience more rain on Friday, when a potential 5mm was forecast. Temperatures are expected to remain high on the weekend, with a top of 19 degrees on Saturday and Sunday.

"A cold front moving across Canberra late on Thursday on Friday may bring rainfall to Canberra for the first time in weeks," he said.

Mr Gonzales said next week should be slightly cooler, although temperatures should remain around or above the average daytime temperature of 15.6 degrees.

Meterologist Ben McBurney said the "18-20 degree mark everyday in Canberra" over the past week was "definitely a fair bit warmer than usual".

"We've only seen two strong cold fronts move through the east in the last month, so that'll mean conditions are generally less windy than they would be at this time of year," he said.

Mr McBurney said the unusually warm temperatures were due to a high pressure system off the NSW coast which had been affecting the region for the past few weeks.

He said the high pressure system had also been keeping winds low, meaning clear, bright days for the Canberra region but also a number of cool nights.

"The winds have been very light, no dominant winds at all, making for very pleasant days," he said.